Cahill netted New York’s opening goal in Sunday morning’s 5-4 loss to Chicago Fire which was his final club game before linking up with the Socceroos this week.
The Australian all-time leading goalscorer returned from a hamstring injury, which has troubled him for over a month, by playing an hour last week and was delighted to get through a full 90 minutes against Chicago.
"I needed 90 minutes myself really and I needed to put in a good performance because I’ve been unlucky with injuries," Cahill told Big Apple Soccer post-game.
"To get 90 minutes before going to the World Cup is massive for me, massive for my country and obviously my club here."
Cahill scored with a trademark finish, rising high to power home Eric Alexander’s left-wing cross on six minutes.
The goal was Cahill’s first for the campaign, having scored 12 times last term, and came at the ideal time ahead of the World Cup.
Prior to the strike, Cahill's last goal at any level came in Australia's 4-3 friendly loss to Ecuador in early March when he scored a double.
While Cahill was delighted with Sunday’s game on an individual level, he admitted the result left him disappointed.
"I would’ve liked to of left on a better send-off but overall, mixed emotions today," Cahill said.